Why does God give mercy? Roger Erdvig on Isaiah 30:18

In this episode of In the Word, On the Go, educator and author, Dr. Roger Erdvig discusses the mercy and justice of God which is found in Christ and featured in Isaiah 30:18. Roger says, "Many people look at God as a vengeful divine being, but our God satisfies justice by giving himself. He absorbs the punishment that should be ours and grants us mercy in return."